The Mexican American Legal Defense and Educational Fund, the American Civil Liberties Union, the ACLU of Arizona and the National Immigration Law Center will hold a news conference Thursday in Phoenix to announce the legal challenge, the groups said.
The law, signed by Republican Arizona Gov. Jan Brewer last week, encourages racial profiling, endangers public safety and betrays American values, the rights groups said in a news release.
Brewer and others who support the law say it does not involve racial profiling.
“Racial profiling is illegal,” Brewer said after signing the bill Friday. “It is illegal in America, and it’s certainly illegal in Arizona.”
The law requires immigrants to carry their alien registration documents at all times and requires police to question people if there is reason to suspect they’re in the United States illegally. It also targets those who hire illegal immigrant day laborers or knowingly transport them.
Brewer also issued an executive order that requires additional training for local officers on how to implement the law without engaging in racial profiling or discrimination.